Red Hat Certification Exam Interview Preparation Guide
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Red Hat Certification Exams Frequently Asked Questions in various Red Hat Certification Exams Interviews asked by the interviewer. So learn Red Hat Certification Exams with the help of this Red Hat Certification Exams Interview questions and answers guide and feel free to comment as your suggestions, questions and answers on any Red Hat Certification Exams Interview Question or answer by the comment feature available on the page.

40 Red Hat Certification Questions and Answers:

1 :: How to Create one partitions having size 100MB and mount it on /data

1. Use fdisk /dev/hda ->To create new partition.
2. Type n-> For New partitions
3. It will ask for Logical or Primary Partitions. Press l for logical.
4. It will ask for the Starting Cylinder: Use the Default by pressing Enter Key.
5. Type the Size: +100M ->You can Specify either Last cylinder of Size here.
6. Press P to verify the partitions lists and remember the partitions name.
7. Press w to write on partitions table.
8. Either Reboot or use partprobe command.
9. Use mkfs -t ext3 /dev/hda?
Or
mke2fs -j /dev/hda? To create ext3 filesystem.
10. vi /etc/fstab
Write:
/dev/hda? /data ext3 defaults 1 2
11. Verify by mounting on current Sessions also:
mount /dev/hda? /data
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2 :: Explain Software RAID, such as the Linux MD driver, are dependent on CPU as opposed to hardware RAID, which is implemented on the interface controller itself. A. True B. False

A. True
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3 :: How to Make Successfully Resolve to server1.example.com where DNS Server is 192.168.0.254

1. Vi /etc/resolve.conf
search server1.example.com
nameserver 192.168.0.254
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6 :: Suppose Your system is giving error while booting on Runlevel 5 . Make successfully boot your system in runlevel 5.

While you load the X Window System, you will get the problem. To troubleshoot follow
the following steps:
1. Check the /tmp is full ?
2. Check your quota, hard limit is already crossed ?
3. Check xfs service is running ?
4. Boot the system on runlevel 3 and execute the system-config-display command
5. Edit the /etc/inittab to set default runlevel 5.
id:5:initdefault:
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7 :: Suppose You Completely Install the Redhat Enterprise Linux ES 4 on your System. While start the system, its giving error to load X window System. How will you fix that problem and make boot successfully run X Window System.

Thinks While Problems occurred on booting System on Runlevel 5 (X Window).
1. /tmp is full or not
2. Quota is already reached
3. Video card or resolution or monitor is misconfigured.
4. xfs service is running or not.
Do These:
1. df h /tmp /tmp is full remove the unnecessary file
2. quota username if quota is already reached remove unnecessary file from home directory.
3. Boot the System in runlevel 3. you can pass the Kernel Argument from boot loader.
4. Use command: system-config-display It will display a dialog to configure the monitor, Video
card, resolution etc.
5. Set the Default Runlevel 5 in /etc/inittab id:5:initdefault:
6. Reboot the System you will get the GUI login Screen.
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8 :: How to Successfully resolve to server1.example.com where your DNS server is 172.24.254.254

DNS is the Domain Name System, which maintains a database that can help your
computer translate domain names such as www.redhat.com to IP addresses such as
216.148.218.197. As no individual DNS server is large enough to keep a database for the
entire Internet, they can refer requests to other DNS servers.
DNS is based on the named daemon, which is built on the BIND (Berkeley Internet
Name Domain) package developed through the Internet Software Consortium
Users wants to access by name so DNS will interpret the name into ip address. You need
to specify the Address if DNS server in each and every client machine. In Redhat
Enterprise Linux, you need to specify the DNS server into /etc/resolv.conf file.
After Specifying the DNS server address, you can verify using host, dig and nslookup
commands.
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9 :: Suppose neo user tried by: dd if=/dev/zero of=/home/neo/somefile bs=1024 count=70 files created successfully. Again neo tried to create file having 70K using following command: dd if=/dev/zero of=/home/neo/somefile bs=1024 count=70 But he is unable to create the file. Make the user can create the file less then 70K.

Very Tricky question from redhat. Actually question is giving scenario to you to
implement quota to neo user. You should apply the quota to neo user on /home that neo
user shouldn't occupied space more than 70K.
1. vi /etc/fstab
LABEL=/home /home ext3 defaults,usrquota 0 0
To enable the quota on filesystem you should mount the filesystem with usrquota for user
quota and grpquota for group quota.
2. touch /home/aquota.user ->Creating blank quota database file.
3. mount -o remount /home-> Remounting the /home with updated mount options.
You can verify that /home is mounted with usrquota options or not using mount
command.
4. quotacheck -u /home ->Initialization the quota on /home
5. edquota -u neo /home-> Quota Policy editor
See the snapshot
Disk quotas for user neo (uid 500):
Filesystem blocks soft hard inodes soft hard
/dev/mapper/vo-myvol 2 30 70 1 0 0
Can you set the hard limit 70 and soft limit as you think like 30.
Verify using the repquota /home command.
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